【摘要】 桥梁消能减振技术是通过在桥梁结构上合理设置耗能装置来增加结构阻尼、吸收地震等其它外界因素作用下的振动能量,减小结构的振动反应。本文结合杭州湾大桥工程南航道桥,提出在斜拉桥主梁与过渡墩、辅助墩之间沿横向设置粘滞阻尼器,来控制大跨桥梁的横向地震反应。分析表明,采用阻尼消能减震技术,不仅可有效地减少大跨桥梁的横向地震反应,而且还可同时限制桥面横向温度变形,保护伸缩缝。更多还原

【Abstract】 The damped energy-dissipated technique of bridges is to increase the damping of structures,to absorb the vibration energy due to earthquake and other external factors,and then to reduce the response of structures by installing energy dissipation devices in bridges.Based on the project of the south channel bridge of the Hangzhou bay bridge engineering,the viscous dampers are proposed to install between the deck and transition auxiliary piers to reduce the transversal seismic response of the bridge structure.Analysis shows that the transversal earthquake reaction of the bridge can be reduced effectively,the deck transversal displacement will be restricted and the failure of the expansion joints will be prevented as well by adopting resonable layout of structural system and dampers.更多还原